What are concave lens .....
mkrishnan:
is in maths
hay any one please tell how is it be allotted 50 marks for this question for maths
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Concave lens
A lens made by joining the parts of two spherical surface that is thinner in the middle than at the edges it converts the incident parallel rays bends away from the principal axis .....
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1)A concave lens is a lens in which at Least 1 side is curved inside.
2)Concave lens are usually thinner at middle and thicker at ends.
3)It is a diverging lens, means it diverges all the light pass through it.
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